1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0186ed7768f3fc0af504c6838360a17283474b0a427826a9f7b0c362449a7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb368faa02ea5bc7053c39d0d5ba1e3edcb0899e4a3e4017f52eae2e66569a931. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d435f60d51b2fed00cd0b4f9c5a9cef3fcf18f7db10b5c54669f07d5c5de49. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665cad54c9360fd35563509e7bb296979adaab6ab3e4907b4cf2755933573ae4. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d852a41446a886f34e5029b324e199aaa7e4a93d0a79f07ea64a5dbd96fe1b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f0663d79e68ee5fc62e81a824588b563da0100251b34d7469a7935faa14ea2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce75cec30415e0759a5e9412dcb4d7b7da7a602dc0e03001f74dc8650db5b5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f80b1ee33dbe27f975d97afc45e514ab98ecc8a26a660843e6cc9288f6a2d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55da2d3fff9d732a4e4607ca457e3af105f832f41fbdffed12638f84bc8fe2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9081228a16d851497579921ed7654d539e896a766ffead5aa9f9f008e46bf4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1309509b6508ef833e9b9945956d8d05ecac53689cd4f6d71d4583428497c0b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee293fe90386ade2d709e67ff41c3a98e21256155def18c187ac08f646aec11. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9766c1f82b895226014f10f9bf11b5d58c088781bb7d44a5a3e33e4e2bcaea. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93125d3e6f25644be468f439cc6d3a874aa24a5d99edc2c3b2f9784b2cfc1adf. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e15e0d0435fad58c633a4a42e4cba339d872922c14c1e3e3134bfe11eec228. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819f4cc0851102082915270eea78c2d8890b087679dd9f065d2b78bdccbdc545. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2546834.